Heater



NOV 19, 1946- G. w. ZIMBELMAN ETAL 2,411,33

I HEATER Y Filed Dec. 8, 1944 2 Sheets-Sheet 1 n a.. la 5 fm A 0 .IC j 4 2. w//M c J k., a m w, Ku w Z 6 t j 5+. m ,l -LWL i [MU d sections or sheet metal shells II and I2.

Patented Nov. 19, 1946 UNITED 'STATES PATENT OFFICE Y HEATER George W. Zimbelman and JohnCherry, Signal Mountain, Tenn., assignors to Samuel Stamping and Enameling Company, Chattanooga, Tenn., a corporationof Tennessee `Application December 8, 1944, Serial No. 567,215 (Cl. 12d-85) 4 Claims. 1

The instant invention relates to portable heaters and more particularly to a heater formed of sheet metal and preferably utilizingl a gaseous fuel.

One of the primaryobjects of the invention is the construction of a heater of the character aforementioned which is formed of only three sheet metal parts, namely a body or shell of two telescoping members and a burner member.

A Still another purpose of the invention is the formation of a sheet metal heater in which the burner is not centered in the heater but under a curved portion of one ofthe sheet metal members whereby the curved portion acts as a baiiie.

Still another aim is the fabrication of a sheet metal heater ofthe type specied having structural features in which the heat flow attains a high velocity with a tendency to spread at a low level over the floor of the room in which the heater is placed.

Yet another object is the making of a heater which is readily stamped from sheet metal, easily assembled and spot welded together and which is preferably given a porcelain-enamel nish to protect and embellish the sheet metal members.

The above and other aims and objects will be apparent from the detailed description hereinafter appearing when taken in conjunction with the appended drawings forming a part hereof and in which Figure 1 is a front elevational view 0f the completed heater and showing the burner member in dotted lines;

Figure 2 is a side elevational view of the heater of Figure l;

Figure 3 is a sectional view taken on line 3-3 of Figure 1;

Figure 4 is a perspective View showing the relationship of the two heater shells or sections prior to the telescoping and uniting thereof;

Figure 5 is a plan View of the burner blank;

Figure 6 is a side elevational View of the blank of Figure 5 after same has been bent to shape and provided with attaching lugs; and

Figure 7 is a sectional View taken on line 'l-l of Figure 5.

Referring rst to Figs. l to 4, inclusive, the reference character I0 designates the heater as a whole, which it will be seen is formed of two Shell I I comprises a front wall I3, parallel side walls I4 and I5, the front wall I3 extending vertically and terminating at its upper end in a curved baffle portion I6. It will be noted that the wall I4 is cut away as at Illa forming a leg member Il angularly disposed to `an adjacent leg member I8 of the wall I3. Similarly wall I5 is cut away as at ia forminga leg member I9 angularly disposed to leg member 2l] of front wall I3. The latter is out away as at 2I forming the aforementioned leg members I8 and 2D thereof and it will be understood that section II has no rear and no bottom wall. l,

. Shell section I2 is constructed similarly to shell section Il but is of greater heighth and width. As in shell section I I, shell section I2 has parallel side walls 22 and 23, a rear vertically extending wall 24 terminating in a forwardly curved baille portion 25. Also, each of walls 22 and 23 is cut away as at 22a, 23a, respectively, provided with a leg member 26 and 2l, respectively, while rear wall 24 is cut away as at 28 similar to opening 2l of the section I I. By reference to Fig. 4 it will be seen that the walls 22 and 23 of the section E 2 have an inwardly extending ledge 291 and 3u, respectively. Fig. 4 shows the two sections I I and I2 in position for assembly, section II being adapted to be telescopically positioned within section I2 with the wall I4 of section II in abutting parallel relationship inwardly of and with wall 22 of section I2 while similarly wall I5 of section I I is in abutting parallel relationship inwardly of and with wall 23 of section I2. When thus assembled the sheet metal sections or shells II and I2 may be spot welded together inwardly and outwardly along substantially lines 3I and 32, see Figs. 2 and 3.

The burner member is shown in Figs. 51, 6 and 'l and comprises a sheet metal stamping designated in its initial form generally as 4U. It is essentially a sheet or metal plate formed with similar raised portions 4I, 42 and other similar raised portions 43 and 44 all symmetrically disposed about the longitudinal axis of the stamping. A second step in the formation of the burner member comprises perforating the adjacent raised portions 43 and 44 to provide, a series of spaced ports 45 and 4B. The next step comprises bending the stamping 4I) along its longitudinal axis, the completed burner being shown in Fig'. 6. The abutting edges of the burner are preferably united by spot welding as 46a, and elsewhere and the opposed ends are provided with lugs 4l, 48 spot welded thereto. The burner is now ready to be positioned within the telescoped united shell sections I I and I2. By reference to Figs. 2 and 4 it will be seen that the lugs 4l pass through an opening 48a, in wall I4 of shell member II while the annular conduit formed by abutting raised portions 4I and 42 terminating in an outwardly flared entrance port 49 is positioned adjacent opening 50 in wall I4, said opening being preferably provided with a conventional valve member 5I adapted to receive gas hose 52 provided With a conventional controlling valve 53. Lugs 41, after being inserted through opening 48a are reversely bent as will be seen in Fig. 2 of the drawings. Similarly, lugs 43 are positioned in wall I5 of section II. Finally, side wall member I4 may be provided with a small aperture 54 for igniting the gaseous fuel.

It will now be understood that upon ignition of the gaseous fuel issuing from the ports 45, 46, the heat ow will be directed against curved portion or baiile I6 of front Wall I3 of the heater I0 and then deflected toward rear wall 24 of the heater.. Convection currents are created by air entering through cut-away portions 54a, E50., 2l, 22a, 23a and 28 of the shell sections I I and I2 and serve to direct the heat ow against the bafe 25 which projects it with a high velocity forwardly into the room wherethe heat is spread at a low level adjacent the floor.

The surface of heater I0, as well as the burner member, is preferably coated with a porcelain enamel so that the sheet metal is protected and the final product has an attractive finished appearance.

From the above it will be seen that there has been produced a burner Well adapted to perform its intended functions. It is formed of veryv few and simple parts; may be manufactured at low cost and has proved to be eicient in use. Various changes in the specific details shown and described will be apparent to those skilled in the art and it is contemplated to cover all such and to be limited in this respect only as may be necessary by the scope of the claims hereto appended.

What is claimed and desired to be secured by Letters Patent is:

1. A heater having a hollow body portion, said portion comprising a pair of sheet metal sections one of which is of less height and width than the other section, the smaller of said sections including a front Wall, parallel side walls and an open rear portion, said front wall terminating in a rearwardly curved baille portion, the larger of said sections including a rear Wall, parallel side walls and an open front portion, said last mentioned rear Wall terminating in a forwardly curved baffle portion, an open rear portion of the smaller section being "telescopically positioned within the open front portion of the larger section, said sections being united to each other and having 'a burner mounted therewithin.

2. The structure of claim l, said burner member being positioned Within said smaller section below the baflie portion thereof.

3. The structure of claim 1, each of said parallel side walls of both of said sections havingv a cut-away portion adjacent the lower edge thereof, said burner having lugs, said lugs being secured to the side Walls of the smaller section above its cut-away portions and below its baffle portion.

4. The structure of claim 1, the parallel side walls of said larger section having opposed in- Wardly extending ledges for partially supporting said smaller section.

GEORGE W. ZIMBELMAN. JOHN CHERRY. 

